Inauguration preparations are in full force in Washington, DC this weekend, as the nation gears up for President Barack Obama's swearing-in ceremony on Monday.

President Obama and first lady Michelle are volunteering in the Washington area Saturday, as part of the National Day of Service the president enacted in 2009 as part of the pre-Inauguration schedule, the Associated Press reported.

Vice President Joe Biden and his family were prepping packages to send to soldiers overseas as well as veterans and first responders, and Chelsea Clinton kicked off the event.

Meanwhile, thousands of workers and volunteers were busy setting up the National Mall for Monday's events, which are expected to draw a crowd of around 800,000 people.

That's down from the 1.8 million who attended his initial inauguration in 2009, the first time America swore in an African-American president, the AP reported.

A gift shop displays presidential memorabilia as Washington prepares for President Barack Obama's second inauguration on January 19, 2013 in Washington, DC. The US capital is preparing for the second inauguration of U.S. President Barack Obama, which will take place on January 21.

(Mario Tama - AFP/Getty Images)

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Members of the U.S. Army Old Guard Fife and Drum Corps perform on the National Mall as Washington prepares for President Barack Obama's second inauguration on January 19, 2013 in Washington, DC.

(Mario Tama - AFP/Getty Images)

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Preparations are made for the swearing-in ceremony at the US Capitol Building on January 18, 2013 in Washington, DC.

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Marqita Karen (L) and Angela Pea take a picture of themselves in front of the presidential inaugural parade reviewing stand.

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The first group of US National Guard Soldiers and Airmen from more than 25 US States, wait in line as they take a legal oath to officially make them deputized 'special police officers' for the 57th Presidential Inauguration, during 'in-processing' at the DC National Guard Armory January 18, 2013, in Washington,DC. The National Guard will provide a myriad of support to civil authorities.

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T-shirts featuring an image of US President Barack Obama are displayed at a gift shop in Washington, DC, on January 18, 2013. Between 500,000 and 800,000 people are expected to pass through the National Mall, the immense greenway that leads up to the Capitol, compared to the 1.8 million spectators who came to applaud Obama four years ago.

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A worker adjust flags on the US Capitol as preparations continue for the second inauguration of US President Barack Obama in Washington, DC.

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Workers set up the main stage at the US Capitol.

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Two horse-mounted park policewomen patrol along the Mall as preparations continue for the second inauguration of US President Barack Obama in Washington, DC, on January 17, 2013.

(Jewel Samad - AFP/Getty Images)

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Chelsea Clinton speaks at a service summit on the National Mall, January 19, 2013 in Washington, DC. As part of the 57th Presidential Inauguration, Americans across the country will participate in service projects in their communities to celebrate the legacy of civil rights leader Dr. Martin Luther King, Jr. The holiday honoring King will be observed on January 21, the day of the second inauguration of US President Barack Obama.

(Brendan Smialowski - AFP/Getty Images)

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A detail photograph of the first page of President George Washington's inaugural address that in on exhibit at the National Archives January 15, 2013 in Washington, DC. The first president of the United States.

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An iPhone app displays information about the second inauguration of US President Barack Obama in Washington, DC, on January 14, 2013. Organizers unveiled the first-ever smartphone app for a US presidential inauguration on Monday, allowing users to track Barack Obama's swearing in, sign up for events and check maps for the closest toilets.

(Saul Loeb - AFP/Getty Images)

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Military personnel make preperations during an inauguration rehearsal at the US Capitol.

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Signs designate seating areas for VIP's during a rehearsal for the presidential inauguration at the US Capitol.

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Components of the inaugural parade march down Pennsylvania Avenue during a rehearsal for the presidential inauguration.

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A worker uses a pulley to bring a bag to the top of a camera tower before an inauguration rehearsal on Capitol Hill January 13, 2013 in Washington, DC.

(Brendan Smialowski - AFP/Getty Images)

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A worker attaches microphones for a band before an inauguration rehearsal on Capitol Hill January 13, 2013 in Washington, DC.

(Brendan Smialowski - AFP/Getty Images)

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The U.S. Capitol is reflected in a pool in the early morning in Washington, DC. President Barack Obama and Vice President Joe Biden will be ceremonially sworn in for a second four-year term during the 57th Inauguration on January 21.